Geometry
Wire d, mean diameter D, free length, active coils, ends, and wind.
Yard/Quote
Quote
A drawing is enough to start.
No prices on the site. The yard replies with a note. Same-day samples close at 11:00. The sketch below is not a quote.
01 / SKETCH
Rate sketch, then the note.
k ≈ G d⁴ / (8 D³ N). G = 80 000 N/mm² spring steel. Ends and set are not in this number.
02 / NEED
What the desk needs on the note.
A readable drawing or the broken spring. Quantity and when you need them.
Use
Machine, die, garage door, or agriculture. How the spring sits in the job.
Lot
How many. Same-day samples close at 11:00. Friday gate closes at 12:00.
03 / MAIL
Opens your email. Stores nothing.
Mailto to yard@yardcoil.pro. Attach the drawing in your mail client after it opens.